Add missing pyproject.toml to the package.

[tobiasraabe]

No description provided.

[codecov]

Codecov Report

Merging #12 (3f89e3b) into main (c723524) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #12   +/-   ##
=======================================
  Coverage   99.06%   99.06%           
=======================================
  Files          16       16           
  Lines         533      533           
=======================================
  Hits          528      528           
  Misses          5        5           

Flag	Coverage Δ
end_to_end	96.43% <ø> (ø)
unit	52.72% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c723524...3f89e3b. Read the comment docs.